Smash Burgers With Egg Recipe: Crispy-Edged, Eggy-Creamy Breakfast Powerhouse

This smash burger recipe with egg transforms breakfast into a crispy-edged, eggy-creamy powerhouse in under 15 minutes. The secret lies in smashing the patty thin for maximum surface area, creating a crispy crust while keeping the inside juicy—then crowning it with a perfectly fried egg that binds everything together.

I developed this after craving a heartier burger that still felt like a morning meal, and the result? A dish that’s fast, satisfying, and impossible to resist.

The technique is simple but game-changing: smash the patty with a heavy pan or burger press, then sear it over medium-high heat until edges are golden and crispy. Meanwhile, fry the egg sunny-side-up or over-easy, letting the yolk stay creamy and rich.

The egg isn’t just a topping—it’s the glue that ties the burger together, adding moisture and a luxurious finish every bite. This isn’t your average breakfast sandwich; it’s a restaurant-quality meal that feels like a cheat day.

Assemble on a toasted brioche bun with sharp cheddar, caramelized onions, and a drizzle of garlic aioli for that classic burger experience—just with an eggy twist. The crispy patty, runny yolk, and melty cheese create a symphony of textures, while the bun soaks up every last bit of flavor.

It’s the kind of dish that turns a lazy Sunday morning into a full-blown brunch celebration, and it’s foolproof enough for weekdays too.

Pair with a side of crispy home fries or a fresh arugula salad to round out the meal. The beauty of this recipe is its flexibility: swap in avocado for extra creaminess, add bacon for smokiness, or keep it simple with just the egg and cheese.

Here’s how to make it—fast, crispy, and creamy every time.

Ingredients for smash burger recipe with egg

Twelve ingredients transform a simple breakfast into a restaurant-quality smash burger experience.

The 80/20 ground beef is non-negotiable here—fat content ensures juicy patties that crisp perfectly. Look for pre-ground beef at Whole Foods or your local butcher for optimal freshness; avoid pre-formed patties that lose moisture. The brioche buns should be fresh from the bakery section—St. Louis-style from Trader Joe's or Costco are my go-to. For the cheese, sharp cheddar from a block (like Cabot) melts better than pre-shredded. Caramelizing the onions low and slow brings out their sweetness—yellow onions work best, but reds add a subtle tang if you prefer.

No fresh garlic? Garlic powder at half the amount works in a pinch, but the minced version adds real depth. The garlic aioli is where the magic happens—Duke's or Hellmann's mayo provides the base, but homemade (mayo + lemon + minced garlic) elevates it to restaurant quality. Swapping the brioche for potato buns cuts carbs without sacrificing texture. For a vegetarian twist, beef crumbles (like Beyond Meat) mimic the texture when smashed. The vegetable oil should have a high smoke point—Avocado oil is ideal for frying both patties and eggs.

Store ground beef in the coldest part of your fridge, used within 2 days for peak flavor. Brioche buns freeze beautifully—wrap individually and toast straight from frozen. The aioli keeps for 5 days in the fridge, but add an extra 1 tbsp lemon juice to extend freshness. For meal prep, assemble burgers sans buns, then toast buns to order—crispy edges are best served immediately. Leftovers? The patties reheat well in a skillet, but the eggs are best enjoyed fresh.

Step-by-step instructions for smash burgers with egg

Master the technique for perfectly crispy-edged patties and silky-smooth egg yolks in under 20 minutes.

Divide the 1.25 lb ground beef (80/20) into 4 equal portions (about ¼ lb each). Gently shape each into a loose oval about ½-inch thick—don't overwork the meat or it'll get tough. I like to use my hands for this, keeping the surface slightly uneven so it sears better.

Heat ½ cup vegetable oil in a large skillet over medium-high heat until shimmering. Working in batches, place one patty in the skillet and immediately press down firmly with a spatula for 10-15 seconds until it spreads to about 3 inches wide. This smash technique creates those signature crispy edges while keeping the center juicy. Flip once and cook for another 2-3 minutes per side until the edges are deep golden brown and the internal temperature reaches 150°F. Transfer to a plate and tent loosely with foil.

In the same skillet (no need to clean it—the browned bits add flavor), melt the 2 tbsp unsalted butter over medium heat. Add the thinly sliced yellow onion and cook for 8-10 minutes until softened and golden brown, stirring occasionally. Season with ½ tsp salt and ¼ tsp ground black pepper. Remove from heat and set aside.

While the onions cook, whisk together the 0.25 cup mayonnaise, minced 2 garlic cloves, 1 tsp lemon juice, and remaining 1 tsp salt in a small bowl. This garlic aioli should be smooth and bright—if it's too thick, add 1 tsp water to loosen. Cover and keep at room temperature until ready to use.

Increase the skillet heat to medium-high and add another 2 tbsp vegetable oil. Crack the 4 large eggs directly into the hot oil, spacing them about 2 inches apart. Let them fry undisturbed for 2-3 minutes until the whites are set but the yolks remain completely liquid. This is where the magic happens—the runny yolk creates that luscious, creamy texture when it meets the crispy patty.

Gently transfer the fried eggs to a plate lined with paper towels to drain excess oil. Season immediately with a pinch of salt and pepper—the yolks should still be vibrant yellow and jiggly when you press them lightly.

Toast the 4 brioche buns in a dry skillet over medium heat for 1-2 minutes per side until golden brown and crisp. Spread each with 2 tbsp garlic aioli, creating a thick layer that will soak up the juices from the patty and egg.

Layer each bun with ½ of the caramelized onions, 1 beef patty, 1 fried egg, and 2 tbsp shredded sharp cheddar cheese. The cheese should melt slightly from the residual heat of the patty, creating a gooey, salty contrast to the creamy egg. Serve immediately while the patties are still warm and the egg yolks remain runny.

For an additional crispy texture, mix the 0.25 cup all-purpose flour with ½ tsp salt and ¼ tsp pepper in a shallow dish. Before smashing the patties, lightly dredge each side in the flour mixture, shaking off any excess. This creates a delicate crust that adds another layer of texture without overpowering the beef's natural flavor.

Real talk: if you skip this step, your burgers will still be delicious—the smash technique alone delivers incredible crispiness. But if you're feeling fancy, this flour dredge takes it to the next level. Either way, the key is keeping everything hot until the very last bite.

Make-ahead tips for this dish

Prep Ahead Components

Start by prepping the garlic aioli the night before—it keeps beautifully in an airtight container in the fridge. Mix the mayo, minced garlic, lemon juice, and salt, then store it covered.

The next morning, just give it a quick whisk before using. This saves you 5 minutes of prep time and ensures the aioli stays bright and flavorful. 💡

Smash Patty Prep

Shape and portion the beef patties the night before, wrapping them tightly in plastic wrap. Store them in the fridge for up to 24 hours—this keeps them from drying out.

When ready to cook, simply smash and sear as directed. The key is to keep them cold until they hit the hot pan for that perfect crispy edge.

Onion Caramelization

Caramelize the onions a day ahead and store them in a sealed container in the fridge. They’ll keep their sweetness and texture for 3 days. Reheat them gently in a skillet over low heat with a splash of water to restore their moisture.

This step is a game-changer for saving time on busy mornings.

Egg Prep Shortcut

Crack the eggs into a small bowl the night before, cover them, and store in the fridge. When you’re ready to cook, simply transfer them straight from the bowl to the hot oil—no need to crack them fresh.

This keeps the yolks intact and makes the cooking process smoother. Just be sure to season them right after frying. 🥚

Bun Storage

Toast the brioche buns the night before and store them in a paper bag at room temperature. They’ll stay fresh and crisp for 12 hours. When you’re ready to assemble, just reheat them briefly in a dry skillet or under the broiler for 30 seconds to restore their crispiness.

This is a lifesaver for meal prep.

Assembly Timeline

Keep the patties, eggs, and buns separate until ready to serve. The patties can be cooked and held at 165°F in a warm oven for up to 30 minutes, while the eggs should be fried fresh.

Assemble everything just before serving to maintain that perfect crispy-creamy texture. This keeps the meal feeling fresh and restaurant-quality, even when prepped ahead. 🌟

Frequently asked questions